Chain-link.



J. M. DODGE.

CHAIN LINK.

APPLIOAHON FILED MAY 16, 1910.

Patented Apr. 21, 1.914.

I the link elements more rigid'than heretofore tended bearing for .the l sprocket wheel.

- are the perforations for the pivot pin, and

" ent'-instance,.are -teeth-.W ich engage the `A working surface .of cach tooth an'extended 1,094,2ool'f;

tion; and Fig. 9, is aplan view,` showing a 'at right angles, thus forming the bearings lprojections c, extended hearings c and the 'Jannsjm ionen,

COMPANY, for CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

" f cHhIN-LINK.

'l `ispecuziiicaton To aZZ-1ezomtmay concerha v Be it Vknown thatI, JAMES M.-DODcn, a' citizen of the United States, residingin Philadelphia, Pennsylvania, have invented certain Improvements in *Chain-Links, of which the following is. a specification.

My invention relates to certain improvements in drive chains having teeth which engage the teeth of a sprocket wheel. In this type of chain each link is made up of a series of elements, the elements being made from Ysheetinetal and preferably arranged in pairs,'oe'pai'r of elements of one link alternating with a pair of elements of a link to which it isA coupled. f; n

One objectgef myV invention isto make and to insure properl alinement'of thebearing faces ofthe linklelements of each pair, and alfurther'object-is to' provide an exf' .teeth upon the This applicationl'isa continuance of the application tiled Dec. y 7, 1909, Serial No."

In the accompanying drawing :-Figure v1, is a perspective view of myimproved chain link element; Fig."2,.is a side view; Fig. 3, is a sectional yiew on the -line'3-3, Fig. 2; F'IA, is a sectional'view on the line 2c-4, 'g. 2; Fig.'5, is a plan view; Fig. 6, is a sectional view onthe line 6 6, Fi 2; Fic. 7, is a view showing two sections o the link element before. being .welded together; Fig. 8, is va sectional-view ofV a modificachain made in accordance with-my invention.l '5 I Referringin the first"l instance to Figs.- 1 to 4, A isa llink element made up of two sections a, a. One section is identical with the other and `:nada bythe same dies. a", a

projecting -from one side ofeach ksection is an extended bearingic. .qi a,`i nV thepresteeth of a sprocket wheel," and I form on the bearing by` .bending the'material of the link l), I also'prefcra'hly bend'the upper edges of the links at-e, e to form projections. The

extended bearings b all projectsubstantially of Letters Patent.. communion' .of application Serial No. 531,799, md December 7, 1909. ".rn'is'l l 11910. seria1`1-ro.561.e49.f`

the same 'distance from' the jside lof the link element and are preferably longer than the width of the link elements with which they forA PHILADELPHIA, rENNsYLvNIA, AssIGNoR- fro LIiIK--IsnI/.r

Patented Apr'. 21,1914.

applicati@ area may 1s,

are coupled, so that. when the link elements are assembled the projecting portions e, c and b abut against one `another and prevent the sides of the links coming in close contact with the links with which they are coupled, thus materially-'avoiding side friction. It is not necessary that both extended bearings c and b abut the extended bearings of other :should be so formed that there will be a three point contact holding the links in proper position. v

The two sections of the link elementsare preferably secured permanently together by'l lthe other elements, but either-'one or the then pressure is applied during the electric welding, so that the two sections are firmly' secured one to the other, as illustrated in Fig. 6. By this arrangement I insure the proper alinement' of the extended bearings c, c of each link section', as well as the extended bearings b, I). of the teeth.

In some instances instead 'of electrically welding the sections they maybe riveted, as shown in Fig. S. The rivets g pass through perforations in the link sections, after which they are riveted in the ordi- -nary manner.

I do not claim, in this application, a sideI bearlng intermedlate of the extended bear` ings, as this is setfrth and claimed in aY pending application Serial No. 526,536,

`filed by me on the sixth-day of November 1909, nor do I, in this application, clairn .the laterally extended tooth bearings in themselves, as these yare described and Aclaimed in an application for patent filed .by Harold S. Pierce .on

under Serial No. 501,054.

Iclaim:- d 1. A chain link element consisting of two sections rigidly ,secured together, 4eechfsection having. an outwardly projecting bear- June 9th, 1909,

ing .extending beyond its yplane and alining a x t ith, the lien ring of I the. other section.

rigidlyv sccured'together, each section .hav-

I) 2. A chain link made up of two sectionsl ing' alining o one section' alining` with-those .of :the other .se'ction, eaoh.}section-1hav1ng extended bearlngs on one/'side at the pivot perforations and'` at the ysforki'ngk edge of thev teeth.'

3. A chain linkmade-up oftwosections integrally connected together vand each section having projections'I on one side While be- .ing plain on the other. side.

4. A chainl link-element consisting of two rigidly connected parallel plates each haveningsand provided with laterally exten ing bearings Aadjacent -said openings, saidbearin'gs at each opening pron opposite sides oftheir respective platee/f' 5. flchain link element consistingv of two rigidly eonnected plates vhaving openings and laterally extendind bearings adjacent said openings, with proections on the plates 2G intermediate of 'said 'le'nings and 'extending in opposite directioiis on the two-plates.

6. The combination ina-chain, of a series l of link elements, each formed of two rigidly connected plates, and ineens for movably 25 connecting said elements'each element having two oppositely extended lateral projections adjacent its middle portions. j

In testimony whereof, I have "signed my name to this speeicatioh, in the .presence of 30 two subscribing witnesses.

. JAMES M. DODGE; Witnesses:

` HENRY THOMSON, I WM. A. BARR.v 

